Assigwob to i



. w. MELCHEH. TRACTION WHEEL.

APPLICATION n LED 0CT.25,19

Patented May 27,1919

Uhll

LEE W. MELCHER, OF LA GROSSE, WISCONSIN, ASSIGNOR TO LA GROSSE TRACTOR 10., LA CROSSE, WISCONSIN, A CORPORATION OF DELAWARE.

TRACTION-WHEEL.

Specification of Letters Patent. Patented May 12919;.

Application filed Getober 25, 1917. Serial No. 198,378.

secured together, so that when the lugs are not in use, the bolts and lugs will remain connected. By providing lugs 7 to engage the outer periphery of the'rim in lieu of providing a surface which conforms entirely to the curvature of the rim, the lug will be firmly seated on the rim, so that it will not be displaced in use, and furthermore, the spaces, '1 between the lugs per- 'mit dirt to pass between the lug and the rim so that it will not pack into the corners between the lug and the rim.

The. lug-body 6 is comparatively wide, while in plane of rotation of the wheel it is only of sufficient thickness to give the de sired strength to the lug. This'providcs To all whom it may concern:

Be it known that 1, LEE .W. Mnnonnn, a citizen of the United States, and a resident of La Crosse, in the county of La Crosse and State of Wisconsin, have invented certain new and useful Improvements in Traction-Wheels, .of which the followin is a full, clear, and exact description; he invention relates to raction wheels of the type usually employedon tractors, and more particularly to lugs adapted to be applied to the rim of the wheel when the tra ctor is being used for plowing or in soft One object of the invention is to provide an improved traction ing which will not causing the traction-wheels to the ground. Anot error the lug. Fig.

cry of the rim tends be 0nd clog and in which the maximum area or surface is provided for coming in contact with the ground to render the lug eifective in to grip the soil. Heretofore, it has been customary to employ lugs that are conoidal or pyramidal and the present i vention provides a. ing which is elonga-teifilaterally to offer great resistance er obyect of the invention is to provide an improved traction lug which can be produced at a low cost and easily a plied to the rim of a traction wheel and which, when applied, will be eiiectively 3e secured to the rim of the wheel.

lfhe invention consists in the several novel rrshereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings: Figure 1 is a perspective of a portion of the traction-wheel em-.

bodying the invention. Fig. 2 is a front elevation of a lug, the rim of the wheel being shown in section. Fig. 3 is a side elevation 4 is a central section and r Fig, 5 is a bottom view.

The improvedlug comprises a body por-' tion 6 formed of a casting," feet 7 adapted to engage the outer periph- A screw bolt 9 is provided with a head 10 which is embedded in body 6, the latter bein' cast around the head anda portion of t e shank of the bolt. The bolt exthe lugs 7 and is'adapted to extend t rou h the wheel-rim so that when a nut 11 is clamped against the inner face of the rim,'.the entire lug will be securely fixed to the-traction wheel. By casting the 66 body around the bolt, they are permanently *engagin'gthe ground and can and has lugs or.

8 of the traction wheel.-

the maximum surface on the lug which is adapted to engage the ground and avoids a shallow angle between the periphery of the rim and the operative face of the lug. The central portion 14 of the lug is tapered upwardly and inwardly from the bottom to the edge 12 and transversely, and the lug is tapered, as at 15, from its medial portion to its sides, to deflect the soil laterally. The sides 15 of the lug are straight. This form of lug has been The invention exemplifies a traction lug which is formed with efficient gripping surfaces and consists of a casting with a wrought iron bolt cast into it so that it can be quickly and readily attached ordetached from a wheel rim. Also one which provides a maximum transverse surface for at a low cost.

The invention is not to be understood as restricted to the details set forth, since these may be modified within the-scope of the appended claims, without departing from the spirit and scope of'the invention.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is:

1. A traction lug ing a body provided extending outer edge, a base to engage the rim of the wheel and a transversely extending bearing face, tapered from the base to the outer edge and reversely tapered from its center to the sides, and means to secure the lug to the wheel. 2. A traction lug for tractors comprising a body provided with a transversely for tractors compriswith a transversely be produced extending outer edge, a base to engage the rim of the Wheel and front and rear hearing faces tapered from the base to the outer edge and each reversely tapered from its 5 center to the sides, and means to secure the lug to the Wheel.

3. A traction lug for tractors comprising a body provided with a transversely tending outer edge, a base, and a tap beaning face, the base having integral v spaced apart to leave longitlidinal spar-e5 therebetween for engaging the Wheel .rin'n and means to secure the lug to the Wheel.

LEE 7. MELCHELZ. 

